Response:
A man walked into a library and asked the librarian, "Do you have any books on Pavlov's dogs and Schrödinger's cat?" The librarian replied, "It rings a bell, but I'm not sure if it's here or not." The man laughed and said, "Well, that's a real paws-ibility!" The librarian just rolled her eyes and muttered, "Cat-astrophic puns are the worst." The man grinned and said, "Hey, I'm just trying to make a purr-fect joke!" The librarian sighed and handed him a book, saying, "Here, take this and paws for a moment. Maybe it'll help you come up with a joke that's the cat's meow."
